Color classification 2inch to 1.2inch Dn50×32 [2×1¼] National Standard 2inch to 1.5inch Dn50×40 [2×1½] National Standard 2.5inch to 6 Minutes Dn65×20 [2½×¾] National Standard 2.5inch to 1inch Dn65×25【2½×1】National Standard 2.5inch to 1.2inch Dn65×32 [2½×1¼] National Standard 2.5inch to 1.5inch Dn65×40 [2½×1½] National Standard 2.5inch to 2inch Dn65×50 [2½×2] National Standard The Following Is the Conventional National Standard Hot-Dip Galvanized Pressure Resistance 1.6Mpa The Following Is the National Standard Thickened Hot-Dip Galvanized Pressure Resistance 2.0Mpa The Following Is the National Standard Extra Thick Hot-Dip Galvanized with Pressure Resistance of 2.5Mpa The Following Is a Reducing Elbow, Hot-Dip Galvanized, Pressure-Resistant 1.6Mpa 4 Points Dn15 [½] Construction Support, Thread Buckle Diameter Is about 19mm 6 Points Dn20 [¾] Construction Support, Thread Buckle Diameter Is about 24mm 1inch Dn25【1"】Jianzhi Thread Buckle Diameter Is about 30mm 1.2inch Dn32【1¼】Jianzhi Thread Buckle Diameter Is about 39mm 1.5inch Dn40【1½】Construction Support Thread Buckle Diameter Is about 46mm 2inch Dn50【2"】Jianzhi Fm Ul Certified National Standard Extra Thick 3inch Dn80【3"】Thread Buckle Diameter Is about 85mm 6 Points Dn20 [¾] Thread Buckle Diameter Is about 24mm 4 Points Dn15 [½] Thread Buckle Diameter Is about 19mm 1inch Dn25【1"】Thread Buckle Diameter Is about 30mm 1.2inch Dn32【1¼】Thread Buckle Diameter Is about 39mm 1.5inch Dn40【1½】Thread Buckle Diameter Is about 46mm 2inch Dn50【2"】Thread Buckle Diameter Is about 57mm 2.5inch Dn65【2½】Thread Buckle Diameter Is about 73mm 4inch Dn100【4"】Thread Buckle Diameter Is about 110mm 4 Points Dn15 [½] Thickened, Thread Buckle Diameter Is about 19mm 2inch Dn50【2"】Thickened Thread Buckle Diameter Is about 57mm 1.2inch Turn 4 Minutes Dn32×15【1¼×½】National Standard 1.2inch to 6 Minutes Dn32×20 [1¼×¾] National Standard 1inch Turn 4 Minutes Dn25×15【1×½】National Standard 1inch to 6 Minutes Dn25×20 [1×¾] National Standard 2.5inch Dn65 [2½" Thickened Threaded Fitting, Thread Diameter Approximately 73mm 6 Points to 4 Points Dn20×15 [¾×½] National Standard 1.5inch to 1.2inch Dn40×32 [1½×1¼] National Standard 2inch Turn 4 Minutes Dn50×15【2×½】National Standard 2inch to 6 Minutes Dn50×20 [2×¾] National Standard 2inch to 1inch Dn50×25 [2×1] National Standard 1.2inch to 1inch Dn32×25 [1¼×1] National Standard 1.5inch Turn 4 Minutes Dn40×15 [1½×½] National Standard 1.5inch to 6 Minutes Dn40×20 [1½×¾] National Standard 1.5inch to 1inch Dn40×25 [1½×1] National Standard 6 Points Dn20 [¾] Thickened Thread Buckle Diameter Is about 24mm 1inch Dn25【1"】Thickened Thread Buckle Diameter Is about 30mm 1.2inch Dn32【1¼】Thickened Thread Buckle Diameter Is about 39mm 1.5inch Dn40【1½】Thickened Thread Buckle Diameter Is about 46mm 1 Minute Dn6 [1/8] Construction Thread Buckle Diameter Is about 8.2mm 2 Points Dn8 [¼] Construction Support, Thread Buckle Diameter Is about 12mm 3 Points Dn10 [3/8] Construction Thread Buckle Diameter Is about 16mm
